Home / 720,981,036.45-1,081,471,554.68-478,643,940.45

Finding the Fourth Proportional to 720,981,036.45, 1,081,471,554.68 and 478,643,940.45

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Solution

The fourth proportional to 720,981,036.45, 1,081,471,554.68 and 478,643,940.45 is: 717,965,910.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,981,036.45 : 1,081,471,554.68 = 478,643,940.45 : x
  2. Step 2: Convert to fraction form
    720,981,036.45/1,081,471,554.68 = 478,643,940.45/x
  3. Step 3: Cross multiply
    720,981,036.45x = 1,081,471,554.68 × 478,643,940.45
  4. Step 4: Simplify right side
    720,981,036.45x = 517,639,806,414,229,568
  5. Step 5: Solve for x
    x = 517,639,806,414,229,568/720,981,036.45
  6. Step 6: Final answer
    x = 717,965,910.68

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.